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Chocolate Marshmallow Swirl Cookies – Fudgy, Gooey & Irresistible

These Chocolate Marshmallow Swirl Cookies are the definition of indulgence — rich, fudgy chocolate cookies swirled with soft, gooey ribbons of marshmallow fluff. Each bite combines deep cocoa flavor with creamy sweetness for a texture that’s soft in the center and chewy around the edges. They’re a perfect choice for chocolate lovers, s’mores fans, or anyone who enjoys bakery-style cookies with a touch of drama. The marshmallow swirl bakes into dreamy white ribbons that caramelize slightly at the edges — giving you that nostalgic campfire flavor without the mess. Perfect for the holidays, bake sales, or cozy weekends, these cookies will disappear faster than you can bake them!
Print Recipe Pin Recipe
Prep Time 15 minutes
bake & Cooling Time 20 minutes
Total Time 35 minutes
Servings: 20 cookies
Ingredients Equipment Method Notes

Ingredients
  

Fresh Products
  • 2 Large eggs
Condiments
  • 1 cup Marshmallow fluff
Dry & Flavoring Ingredients
  • 2 cups All-purpose flour
  • 3/4 cup Unsweetened cocoa powder
  • 1/2 tsp Baking soda
  • 1/4 tsp Salt
  • 1 1/2 cups Granulated sugar
  • 2 tsp Vanilla extract
Dairy
  • 1 cup Unsalted butter softened

✨ Kitchen Essentials You’ll Love

Quick picks I trust for better results, faster prep, and easier cleanup.

  • 🍳

    Lodge Seasoned Cast Iron Skillet

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  • ⚡

    Instant Pot Duo Plus 9-in-1 Electric

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  • 🔥

    CHEFMAN Digital Air Fryer XL 10L

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Disclosure: As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.

Equipment

  • You’ll need:
  • Mixing bowls (large and medium)
  • Hand or stand mixer
  • Whisk and spatula
  • Measuring cups and spoons
  • Baking sheets
  • Parchment paper or silicone baking mat
  • Cooling rack

Method
 

step1:
  1. Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper.
step2:
  1. In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. Set aside.
step3:
  1. In a large bowl, cream together the butter and granulated sugar using a mixer until light and fluffy — about 2 minutes.
step4:
  1. Add the eggs and vanilla extract, and beat until smooth and creamy.
step5:
  1. Gradually add the dry ingredients to the wet mixture, stirring until a thick chocolate dough forms.
step6:
  1. Spoon dollops of marshmallow fluff (about 1 teaspoon each) into the dough. Use a spatula to gently swirl it through — don’t overmix, or the swirl pattern will disappear.
step7:
  1. Scoop 1½-inch balls of dough onto the prepared baking sheets, leaving about 2 inches between each cookie.
step8:
  1. Bake for 9–11 minutes, or until the edges are set and the centers look slightly underbaked. The marshmallow will puff and caramelize slightly.
step9:
  1. Let the cookies cool on the tray for 5 minutes before transferring them to a wire rack. Enjoy warm for extra gooey centers!

Notes

🧊 Storage & Reheating
Store cookies in an airtight container at room temperature for up to 4 days.
Refrigerate for up to 1 week to keep them fudgy.
Freeze for up to 2 months; reheat for 8–10 seconds in the microwave for gooey perfection.
🥄 Variations
S’mores Swirl: Add 1/2 cup crushed graham crackers to the dough before swirling in marshmallow.
Double Chocolate Chunk: Fold in 1/2 cup semi-sweet or milk chocolate chips for an extra-rich bite.
Mint Chocolate Twist: Add 1/4 tsp peppermint extract for a holiday-inspired flavor.
Nutty Delight: Stir in 1/2 cup chopped pecans or walnuts for a crunchy contrast.
White Chocolate Drizzle: Once cooled, drizzle melted white chocolate on top for a bakery-style finish.
❓ 10 FAQs
1. Can I use mini marshmallows instead of fluff?
You can, but the texture will differ — fluff gives smoother, creamier swirls.
2. How do I keep the marshmallow from melting too much?
Gently swirl it in and avoid overmixing — this keeps beautiful white ribbons.
3. Can I use dark cocoa powder?
Yes, it gives a deeper chocolate flavor and darker color.
4. Why do my cookies spread too much?
Your butter may be too soft — chill the dough for 15 minutes before baking.
5. Can I make them gluten-free?
Yes, use a 1:1 gluten-free flour blend.
6. What’s the best way to get perfect swirls?
Use a spatula to lightly fold the marshmallow into the dough just once or twice.
7. Can I add chocolate chips?
Definitely — they enhance the gooey texture and add more chocolate flavor.
8. Do these cookies harden after baking?
They’ll stay soft if stored properly in an airtight container.
9. Can I use margarine instead of butter?
Butter gives a richer flavor, but margarine can be used in a pinch.
10. Are they freezer-friendly?
Yes — freeze baked cookies or unbaked dough balls for up to 2 months.
🏁 Conclusion
These Chocolate Marshmallow Swirl Cookies are pure chocolate-meets-marshmallow magic. Soft, fudgy, and beautifully swirled, they bring cozy sweetness to any occasion.
Perfect for winter baking, movie nights, or gifting, they’re easy to make yet look (and taste) like they came straight from a bakery. One bite, and you’ll be hooked on that gooey marshmallow swirl!